diff --git a/src/modules/rpc/server.ts b/src/modules/rpc/server.ts
index 41a1407..e3908a4 100644
--- a/src/modules/rpc/server.ts
+++ b/src/modules/rpc/server.ts
@@ -148,7 +148,7 @@ export class RPCServer extends EventEmitter {
 
     if (cachedRequest) {
       this.getRequestLock(request)?.release();
-      return cachedRequest.value;
+      return { ...cachedRequest.value, signature: cachedRequest.signature };
     }
 
     let method = this.getMethodByRequest(request);